Incubator



(No Model.) J. RANKIN.

' INGUBATOR.

No; 298,890. Patented May 20, 1884.

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WITNESSES: NVENTOR:

ATTORNEYS.

N. PETERS. Phnln-Ulhognphor. WlQdngQon. no.

Warren F Srarns Parent rrrcie- JAMES RANKIN, OF SOUTH EASTON, MASSACHUSETTS.

INCUBATUR.

SPECIFICATION forming part of Letters Patent .No. 298,890, dated May 20, 188%.

Application filed July 6, 1883.

To all whom it may concern Be it known that I, JAMES RANKIN, of South Easton, in the county of Bristol and State of Massachusetts, have invented a new and Improved Incubator, of which the following is a full, clear, and exact description.

My invention consists of improved means whereby the water that is employed to maintain the required heat in the incubator is also made to regulate the tei'nperature and maintain a uniform degree of the sameautomatically, as hereinafter fully described and claimed.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is an isometric projection of my improved incubator. Fig. 2 is a longitudinal vertical section of the same. Fig. 3 is an end elevation of the incubator with the boilers removed. Fig. 4 is an elevation of a lamp provided with a flame-regulator, the latter being in section.

In any approved form and size of case a, fitted with egg-drawers I), I arrange a watertank, 0, under the cover of the case and above the egg-drawers, which tankis about as large in length and breadth as the case. The water is supplied to this tank through pipe c from the boilers f, located at one end of the case, said pipe discharging into one end of the tank. The water passes out at the other end of the tank through pipe ii, which descends to a coil, i, of two or three turns of said pipe, located under the egg drawers 2) and returning to the boilers at j. The boilers are heated by lamps k, which have tubular regulators Z fitted to the wick-tubes, so that by rising and falling there on the flames will be diminished or increased. These regulators are connected by rods m, n, and 0 with alever, 19, that has a fulcrum at q and rests on the stem 3 of a float, 8, located in a cylindrical vertical extension, '6, of the tank, forming a float-well wherein said float will rise and fall as the water'expands and contracts by heating and cooling so that as the heat of the water increases and the float rises by expansion the regulators Z will be raised and check the flames oi the lamps; and when the water cools and the float falls the regulators will be lowered and the flames will increase. Besides thus regulating the flames and the heat, the float is also made to control (No model.)

for regulating the lamps is calculated to enable a very regular and uniform condition of heat to be maintained, the ventilating device, in ad dition thereto, will secure still greateruniformity, which is the most essential condition required for a practically-successful incubator. I have practically applied these improvements with great success, realizing more than ninety per cent. of the eggs treated.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In an incubator, the combination, with the heating-tank 0, having float-well t, the float s in said well, provided with the stem 8, and the heatingdamps k, of the lever p,pivoted in a support on the upper part of the case and resting upon the stem of the float, the tubular regulators Z, fitted to the wick-tubes of the lamp, and the connecting-rodsm a 0, substantially as herein shown and described.

2. In an incubator, the combination, with the heating-tank 0, having float-well t, and the incubating-chamber having ventilating-tubes o, of the lever p, having its free end connected to a flame-regulator and provided with the arm y, the float s in said well, the valves to in the ventilating-tubes, and the rod w, journaled in the ventilating-tubes and provided with the crank a, substantially as herein shown and described.

3. In an incubator, the combination, with the heating-tank 0, having float-well t, the incubatingchamber having ventilating tubes 12, and the lamps in, of the flame-regulators Z, the connecting-rods m a 0, the lever 19, provided with the arm y, the float s, and the rod in, journaled in the ventilating-tubes, substantially as herein shown and described.

JAMES RANKIN.

Witnesses:

JAMES H. RANKIN, EDWARD HAYWARD, 

